Improvement in piano-stools



J. WL MGDONOUGH. Piano-Stool.

No. 209,498.v Patented oct.. 29,1878.

N. PETERS. PHOTO-LITHOGRAPNER, WASHINGTQN. D C.

UNITED STATES PATENT CFFICE.

JAMES W. MCDONOUGH, OF CHICAGO, ILLINOIS.

-IMPROVEMENT IN PIANO-STOOLS.

Specification forming part of Letters Patent No. 209,498, dated October 29, 1878; application filed March 28, 1878.

To all 'whom it may concern:

Beit known that I, J AMES W. McDoNoUGH, of Chicago, in the county of Cook and State ef Illinois, have invented certain new and useful Improvements in Piano-Stools; and I do herebydeclare the following to be a full, clear, and exact description thereof, which will enable oth ers skilled in the art to which lny invention ap'pertains to make and use the same, reference being had to the accompanying drawing, in which- Y Figure l represents -a` rear elevation of a piano-stool embodying my invention. Fig. 2 represents a central sectional elevation of the same, and Fig. 3 represents a plan view ofthe parts above the line x in Fig. 2.

Like letters of reference indicate like parts.

The object of my invention is to improve the construction of piano-stools, and so as' to render them more convenient and easy for the occupant when playing upon the piano; andmy invention consists in providing a piano-stool with an adjustable spring back so arranged as to admit of being raised or lowered at will, and so as to form a support for the back of the occupant of the stool, as hereinafter more fully described and claimed.

In the drawing, Arepresents the base of the stool, which is constructed in the usual form. Crepresents the adjusting-screw, which is titted within the stool A and secured at its upper endtto the seat D, and so that the seat may be elevated or depressed in the usual manner. E E are curved springs, which are permanently attached to the seat D and extend upward above the same, as shown in. Figs. l and 2,-and are connected at their upper ends to a crossbar, F, extending from one to the other.

G is a vertical stud, which is pivoted at its sons of different heights. J is a set-screw,

whichpasses through one of the walls of the socket and against the stud G, and so as tohold the back at any desired adjusted height upon the stud. K is a horizontal snpportbar, secured to the lower side of the seat D, andis notched at its ends, so as to allow the springs to pass through it, and serves as a support forA the springs E E when under pressure.

The object of making the back H adjustable, as described, is to admit of raising or lowering the same, so as to bring it to the proper height to support the back of the occupant; and the object of curving the springs supporting the back is to give room for the wearing apparel ofthe occupant.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination, with the seat D, curved springs E E, cross-bar F, provided with the stud G, of the back H, provided with the socket G and set-screw J, substantially as and for the purpose specified.-

2. The combination, with the seat D, provided with thc bar K, curved springs E E, cross-bar F, provided with the stud G, of the back H, provided with the socket G and setsorew J, substantially as specied.

JAMES W. MCDONOUGH.

Witnesses: G. R. HOFFMAN,

J AMES COLLINS. 

